Too Even to Be Random
A teacher catches the students who faked their coin flips with one rule. Real randomness is lumpier than you think.
The Cards That Count for Nothing... Or Do They?
Card counting squeezes a whole shoe into one number — and the famous Hi-Lo system scores three of the thirteen ranks as a flat zero. Wasteful? We test whether folding the 7, 8 and 9 back in builds a sharper count, and find that doing *less* wins.
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The Cards That Count for Nothing... Or Do They?
Card counting squeezes a whole shoe into one number — and the famous Hi-Lo system scores three of the thirteen ranks as a flat zero. Wasteful? We test whether folding the 7, 8 and 9 back in builds a sharper count, and find that doing *less* wins.
The Pen That Cried Wolf
A counterfeit-detector pen is 99% accurate at catching fakes and almost never misfires. It just flagged a customer's $100 bill. So why is the bill still almost certainly real?
Up Like a Rocket, Down Like a Feather
Five price signals, five right triangles, one angle that tells you when the (asset) rocket is too vertical to stay aloft. A trader's intuition expressed in tangents.
Mathematics is already
happening around you
RecreateMath presents challenges rooted in the genuine mathematics of ordinary moments — the arc of a thrown ball, the rhythm of traffic, the probability of a cancelled flight.
Each puzzle is crafted to be solvable with curiosity and a pen, yet deep enough to reward deeper exploration. No prerequisites. Just a love of thinking clearly.
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